Scaffold



Oct. 3, 19.33.

J. J. MAs'rERsN Filed Oct. 4, 1950 S CAFFOLD 3 Sheets-Sheet l cle/:Nas fer .son

Oct. 3,' 1933. 1 MASTERSON 1,929,325

SCAFFOLD Filed Oct. 4. 1930 3 Sheets-Sheet 2 Oct. 3, 1933.' J. J. MAsTERsoN 1,929,325

SCAFFOLD Filed Oct. 4. 1930 3 Shaets-Sheqt 3 35' 4Z v gwvantoz l J eZ/as 'e rs on Patented Oct. 3, 1933 l 1,929,325 f l scsFFoLn f 'Y y l AJohn J-.YMastersom *A I* i i Application octane; 4, 1930."A ser'ialfN. 486,423

Y Y L@Clans C1-304-19iff a fr This invention relates to -scaiolds, and it is Figure'Zisanother-v sectional,view'ftakenflonan object of the invention to provide an apparatus'of this kindadapted to' be suspendedfrom `horizontally disposed beams of abuilding structure, bridge structure, and thelike, and which includes securing or anchoring means whereby the scaold may be efectivelyrnaintained insdel sired locationL f Y Y Another object ofthe inventionpis toprovide an apparatus of this kindincluding a hanger adapted tov be 'operatively' engaged-with Y an I-beam, U-beam or the like, or with the rivets ofaplate beam; 1 Y, Furthermore, it is an object ofthe inventionto provide an *apparatus of this kind including a hanger adapted tofbe placed in vdesired Working position and` which is'constructed in a ,manner to permit the same to be shifted as desired along its support.

2O The invention consists fin the details of'construction and inthe cornbination'an'd arrangee ment of the several parts 'of my improved scaffold whereby certainjimportant' advantagesfare attained and the 'device' rendered simpler., less advantageous for usa-as will be'hereinafter more fully set forth.' 4 The novel features offmy invention will hereinafter be definitely claimed'.

3o In order that my invention may be the-better understood, I will now proceed Ato describe thev e of myinvention and in operativeengagement with horizontally kdisposed I-beams;

Figure'Z is a sectionalfviewtaken substantially on the line 2 2 of Figurefl, looking in the direc.-

tion ofthe arrow; v 4,

Figure 3 is an. enlarged Yfragmentary view partly in Vsection and partly in elevation illustrating ahanger in operative engagementyvith the bottom flangeofa'nI-beam;` i l Figure AVLLis a, sectional viewtaken substan-A tially on the lined- 4 of Fig"ure3;lA

. Figure is a fragmentarysectional/view taken longitudinally through one vof the bearn engaging plates particularly f illustrated in 'Figure 3` show-L ing the means whereby the hanger may be shifted when-desired along the-beam;l Figure 6 is a fragmentary v view in inside Velevation ofone ofn the side members ofthe hanger illustratednFigure 3;; Y c

expensive and otherwise morey convenient and the scaffold may be iempl'oye'dpas" is believed to Vthe loth'erby bolts 4*"1orltheV like. .iii These bolts-4narje adapted'tbe selectively dis-f- -posed through'the longitudinally spacedopenings V5 in-th'e'inner portionslof the'sections ofthesusl8 -andf9 is connected-,fbyan intermediate integral gitudinally through ithe beam 'engaging plate;`

. Figurev 8 is a fragmentary view'partly in section' and partly in" elevationillustrating the hang` erllin` operative engagement -with the rivets 'ofV a plate beam; I Y

' Figure 9 is a viewV partly inL section and partly in' elevation illustrating a hanger inoperative 'engagementl with a channel beam; 'f i. Figure 10 'is f a fragmentary" elevational 'view oi` the supporting traekways comprised Yinthe sca-fold as .herein disclosed Vtogether with a co'; acting ,carriage; f 1 Figure; 1l -is a viewvin top plan of thecarriag'e as particularly'illustratedinrFigure 10 unapplied, thecr'oss planks ,being omitted;

`Figure 12 is avtransverse-sectional view,` taken y substantially through the central portionf'ofV the structure asillustrated in Figure vl0, fcertain'. of the parts being in elevation. l v

i "As' particularly 'illustrated 4inrligures l to 3 Vin-f elusive, B vdenotes one of 'a's'eries of horizontally disposed'Ifbeams such asl comprised in? building structures'of vdiilerent kinds, and it"is the pur'-` pose of the present invention to provide vmeans 30.V whereby Aa scaffold can be readily suspended from Y said bearnsto facilitatewthefpaintingloi?.` such n beamsy or'the surfaces adjacent theretofalthough" be obvious, for otherlpurposes..

l-My improved scaffold, aslillustratedinFigures Y to 3 inclusive," comprises Sla' 'pain ofY 'suitably placed substantially parallel-inverted Y`T-bearns T each of desired'lengthandeach of Which'hasl its opposite' endA` portions suspended frorn the base go anges 1 Tof a' bearnfB. Pivotally connectedwith the vertical flange.2 of abeamT: at:- a "desired `point therealong'is arigidfelongated suspender 3 comprised in alianger structure 1H; The sus'- f 'pender 3,- asherein disclosed, comprises two s ec- '95'- tions having their,V inner fend' portions in overlapping rel-ationl and jxedly :connected one,- 'to f pender so that `said suspender may 'be '.lengthte'ned .or shortened' as"V desired.

`'Iheupper end-portionof theJ suspender 3 formed toprovide an .elongated head 6" which is 105 .pivotally-4 connected vby thefbolt 7 between the- -lower plates 8 carried by the side-plates 9 ofthe hanger. These plates 8 are Yinwardly offset with respect tothe plates 9 and `each of said plates so; 'A

plate 10 disposedon a required inward incline so that in the complete assembly of the hanger the plates 8 will snugly receive therebetween the heads 6 of the suspender 3.

Each of the .plates 9 is provided substantially at its transverse center with an openingl 11 in which is received an end portion of aninwardly disposed'arm 12, said arm 12 being pivotally secured tolthe plate 9 by thegpin 1,4 or the like. The arm 120i oneplate 9 isadapted to lap the arm 12 of the second plate 9 vand the overlapping portion of each of these plates is provided with aseries of longitudinally spaced openingsf15 through which are adapted to be selectively in.

serted suitable tie pins 16 whereby the plates 9- may be held in desired spaced relation inV accord- A ance with the requirements of practice. The arms 12 when connected provide meansV whereby the plates 9 are supported .for swinging movement one toward the other. V The upper. or outerlongitudnal marginal portion of eachof the plates 9 is provided therealong with an inwardly disposed flange 1,'7, rthepunder edge of whichisundulated, asl indicatedV atl,

with the endsioi` the angeli provided with the opposite side faces of the ybeam P ina manner whichwill be hereinaftermore particularlyv referred to. .11" vIn the embodiment of vthe-invention as illustrated inFigures- 1 kto A3, however, the undulating y under edge 18 of the flange v17 is adapted to'nterlock with a similarly undulatedrupstanding ange21'carried by the outer marginal portion `oan anchor plate 22 which isadapted to have direct contact` from above with theupper surface of anange 1 of a beam B. ThisV plate 22 is of desired dimensionsand at `its outer-corner portions is providedl with thegoutwardlydirected and laterally disposed lugs 23Vhaving disposed therethrough openings 24. YThese openings 24 areadapted' to register with the openings 25 provided therethrough with the elongated slots 26y .which are adapted to rec'eive'from above the rollers 27 carried by a plate128 overlying the plate A22." The plate 28 yhas freelydisposed .through its opposite end portionsv the. bo1ts'29 -in threaded engagement with thelplate'22. vUpon properlro'- tation of the. bolts 29 thefrollers 27 will beforced through the openings 26 to bring said rollers in direct.- contact'with theY upper surface of afflange 1 which is of'importance and advantage when it is'desired to shift the hanger Valong the beam B.

When the hanger,l however, hasbeenv moved to desired position, the bolts 29 arerotated in a direction to lift the rollersv 271out of contact with in direct lclose contact with Vsuch flange 1 to assure the hanger effectively retaining its desired location.

InFigure 9 is illustrated an embodiment of the invention wherein the hanger is especially de.- signed for use in connection with a channel beam. In this embodimentone of the plates 9'4coacts Withra ange 1 of abea'm B through the mediumof a plate 22 as hereinbefore described with respect to the invention as particularly illustrated inFigures 1 to v3 of the drawings. The plate 9' 'through `the instrumentality of the intermediate plate 10 is'connectedto an inner plate 8. This plate 8," is pivotally connected by the bolt '7' or its equivalent with the head 6' of a suspender 3. The boltl also provides apivotal mounting for a straight side plate 30,.,the upper marginal portion ofwhich,zwhenfthe hanger is in applied position, overlies a side face of the beam B and said upper or overlying portion of the plate 30 loosely carries a roller 31 havingdirect'contact with said adjacent side face. The plate 9 together with rtheplate 30 areprovided With the coacting armslZ. a f v The upper marginal portion of the plate 30 is defined by an outwardly arranged reverted flange l32 providing a hook member whereby, if'desired,

the plate 30 may be horizontally disposed and rested from above upon the'upper flange of* the beam'Bwith theh'oolrY member 32 inV locking engagement with the free marginal-portion of said upper iiangeof the beam B'. v sition ka suitable suspender is adapted Vtobe engaged with the plate 30 through ythe opening provided therethrough for the passage of thebolt 'I' lalthough the connection'of such a suspender may beeiected in any desired'manner. l.

coaeti'ng ,withgeachpf ythe vbeams T is v ar- When in suchl poriage C as' particularly illustrated in'Figures 10,

11 and 12; IThiscarriage C comprisesa pair of elongated side bars 33 having their central. portions connected by an interposed plate 34, said plate, 34 and said side members or bars 33 being preferably integral.V .The eirtremities of the bars or members 33 arecontinued by the upstanding posts 35 ,terminating in the inwardly disposed 'trunnions 36. Freely mounted on the trunnions 36.,are the wheels 37 having contact fromV above with the bottom anges 38` of. a beam T. rBy this means. the ,carriage C) may .be readily and conveniently shiftedvalong a'beam T as may be necessary.,A 3, 1

The outer extremities of the side members or bars33`are preferably connected by the' transversely disposed bars 39 to 'avoid the liability of said youter extremities oi the side members or bars 33l separating. f

*Thev plate 34 constitutes a tablewhich has mounted thereon a saddle 40, the central portion of which is pivotally connected by the bolt 41 or the like Vto the platev or table 34 whereby said saddle may be adjusted at different angles with respect'to the longitudinal axis of the carriage C as maybe required. lThe saddle 40 'is may bestcomply with the requirements of practice and particularly lin such cases wherein a carriage vof 'one beam T cannot be Ytransversely aligned with the carriage of asecond beam vT.

The weight of the beams T together with that of the load'carried thereby serves normally to maintain the Suspenders 3'in AaV vertical position 1,92aa25 l having effective ccaction with the associated beam. Theside faces of the head are beveled or converge Vone toward the otherV in cross sectionto provide a wedge portion 43'. Upon pull beingimposed upon the suspenderv 3 in one direction this wedge portion 43, with'respect to the plates 8, vwill recede at one side of the bolt 'I and enter Y between such plates Sat theopposite sides of the bolt 7 whereby the `plates 8will move inwardly resulting in the upper portions of the plates 9 having slight outward swinging movement to allow the desired shifting of the hanger along a beam. As the suspended 3 returns to Vertical posi` tion the wedge Yportion 43 will coact with .the

plates 8in a manner to return the upper portions of the plates 9 to effectivecoaction with the associated beam. t

To facilitate the action of the head e, 1' and 1tof advantage to have the opposed yfaces 8a vof vthe plates 8 disposed on a bevel substantiallyA complemental tothe beveled side faces'of the wedge portion 43 of the head 6. v v 5 It will be noted that'in my improved scaffold the carriages C are adapted to be shifted ina" direction angular to the direction'of the supwhich is now generally dinicult.

From the foregoing descriptionY itis thought to'be obvious that a scaffold constructed in accordance with my invention is particularly well adapted for use by reason ofthe convenience and facility with which it may be assembled and invention is susceptible of some change and modication without departing from the principles and spirit thereof. and for this .reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out Vmy invention in practice except as hereinafter claimed.

I claimzprovided with inwardly disposed angeameans vconnecting vsaid plates for relative swinging Vsaid suspender, having meansr coacting with means on the plates for moving'the plates one with respect to the other uponmovement of the.

suspender in one direction.

,wedge i 2. Al'hangerrfor a scaffold comprising two plates provided with inwardly disposed' flanges, .Y means connecting said plates for, relative, swingy ing movement and maintainingjsaid plates in,

iiange yof said one of the plates, and means for securing said'anchoring plate and fiange one to the other. Y

3. A hanger for a scaffold comprising two Vplates provided with inwardly disposed' flanges,

means connecting said plates for relative swingv ing movement and maintaining said plates spaced relation, a' suspender lsupported by the plates, an anchoring plate coacting with one of, the plates, and having a portion underlying the flange of said one of the plates, means for securing said anchoring plate andrflangeA one to the other, and lifting means carried by the anchoring `plate. Y

4. A hanger for a scaffoldcomprising two. L'plates provided with inwardly disposed anges,

means connecting said plates for relative swinging movement and maintaining said plates in spaced relation, a suspender supported by the plates,.an anchoring plate coacting with oneof the platesand` having a portion`underlying'the c vflangey of, said one of the plates, vmeans for porting beams B or their equivalent, thus pro- .viding means whereby said beamsmay be readily j and conveniently painted or otherwise workedl upon. This is equally true in connection with afbuilding structure or a bridge'structure access to securing saidfanchoring plate'and ange onelto the other, and lifting means Jcarried by 'the anchoring plate, 'said flifting "5.'A hanger foraI scaffold comprising vtwo plates, means kfor connecting' the intermediate '-portionsof the plates for rocking movement oneV toward the other, said means also maintaining,

said plates'ink spaced relation, inwardly disposed flanges carried byy the correspondingy extremities of the plates, and a suspenderpivotally engaged.; with the oppositeyend portions of the plates, saidV t suspender and the adjacent' 'portions of. thel plates having coacting means forjrocking the plates in one direction vupon swinging the suspende'r in one direction. 1

6. A; hanger for aQscaffold comprising two plates,` means for connectingthe intermediate portions of the plates for rocking movement one towardthe other, saidmeans also maintaining y n I said Vplates in spaced relation, inwardlydisposed 1. A hanger for a scaffold comprising two plates. f

flanges carried. by the corresponding extremities g wedge formation extendingbeyond opposite sides of the pivot.L the adjacent faces of the1 plates being beveled. similar to the.V side faces ofthe" Ano' Y ias 

